Asclepias sullivantii Engelm. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Apocynaceae genus Asclepias species Asclepias sullivantii Name Homonyms Asclepias sullivantii Engelm. ex A.Gray Asclepias sullivantii Torr. Asclepias sullivantii Engelm.